Single-cell RNA sequencing analysis of humanized liver
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE234758 | GEO | 2023/06/16
REPOSITORIES: GEO
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Project description:To make the human liver accessible to metabolic treatments, we employed a liver-specific humanized mouse model in which approximately 50% of the mouse hepatocytes were replaced by human ones. To capture transcriptomes reflecting pathophysiology and therapeutic development of metabolic diseases, we subjected the humanized mice to dietary intervention and the key metabolic transcriptional factor agonist treatments. We then performed rna exoression profiling analysis using data obtained from nanopore direct RNA sequencing of these humanized mice.
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Project description:The goal of this experiment was to see the percentage of human reads over total (mouse and human reads) for unique hepatocyte genes that are zonated as well as for other unique genes for endothelial cells, stellate cells and cholangiocytes.
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Project description:To make the human liver accessible to metabolic treatments, we employed a liver-specific humanized mouse model in which approximately 50% of the mouse hepatocytes were replaced by human ones. For the dietary treatment, the humanized mice were allowed free access to food (AL, n=4 for donor1, n=3 for donor2) or subjected to a twenty-four hours food withdrawal (Fast, n=4 for donor1, n=3 for donor2). For the transcription factor agonist treatments, the humanized mice were injected with DMSO (n=4), fenofibrate (n=4, 50mg/kg, Sigma-Aldrich, Cat. F6020), rosiglitazone (n=4,10mg/kg, Sigma-Aldrich, Cat. R2408) and GW4064 (n=4, 30mg/kg, Sigma-Aldrich, Cat. G5172) by i.p. injection. The livers were collected after 6 hours fasting and stored in liquid nitrogen immediately after mice sacrificed.
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2022-04-06 | GSE186554 | GEO
Project description:Background & Aims: Since the first account of the myth of Prometheus, the amazing regenerative capacity of the liver has fascinated researchers due to its enormous medical potential. Liver regeneration is promoted by multiple types of liver cells, including hepatocytes and liver non-parenchymal cells (NPCs), through the complex intercellular signaling. However, the liver organogenetic mechanism, especially the role of adult hepatocytes at ectopic sites, remains unknown. In this study, we demonstrate that hepatocytes alone spurred liver organogenesis to form an organ-sized complex 3D liver that exhibited native liver architecture and functions in the kidneys of mice. Methods: Isolated hepatocytes were transplanted under the kidney capsule of monocrotaline (MCT) and partial hepatectomy (PHx)-treated mice. To determine the origin of NPCs in neo-livers, hepatocytes were transplanted into MCT/PHx-treated green fluorescent protein (GFP) transgenic mice or wild-type mice transplanted with bone marrow (BM) cells isolated from GFP mice. Results: Hepatocytes engrafted at the subrenal space of mice underwent continuous growth in response to a chronic hepatic injury in the native liver. More than 1.5 yrs later, whole organ-sized liver tissues having a greater mass than those of the injured native liver had formed. Most remarkably, we revealed that at least three types of NPCs with similar phenotypic features to the liver NPCs were recruited from the host tissues including BM. The neo-livers in the kidney exhibited liver-specific functions and architectures, including sinusoidal vascular systems, zonal heterogeneity, and emergence of bile duct cells. Furthermore, the neo-livers successfully rescued the mice with lethal liver injury. Conclusion: Our data clearly showed that adult hepatocytes play a leading role as organizer cells in liver organogenesis at ectopic sites via NPC recruitment.
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Project description:The human liver functions through a complex interplay of parenchymal and non-parenchymal cells, which participate in performing many essential aspects of metabolism and secretion. Mass spectrometry-based proteomic analysis of intact tissue has improved the understanding of these processes, by providing an in-depth view of the human liver proteome. However, the predominance of parenchymal cells, i.e. hepatocytes, means that the total tissue proteome mainly reflects hepatocyte expression. In this study, we therefore used quantitative label-free proteomic analysis to analyze the proteomes of the major parenchymal and non-parenchymal cell types in the human liver, i.e. hepatocytes, liver sinusoidal endothelial cells, Kupffer cells, and hepatic stellate cells. We found that our data recapitulated specific functional differences between cell types, meaning that it can be used to reliably probe various aspects of cellular interplay. Thus, the data we provide constitutes a unique resource for exploring the human liver proteome at major cell type resolution.
2020-04-09 | PXD012615 | Pride